Dimmer for automobile headlights



Y .hayw 27, V192e. i

f gUNITE-osrArE-s EDWARD JQSMYTHE AND ALEXANDER KEER, or rAraBANKsQTEnnIToRY or' Y VA LASKAAU o' nrMMERrort AUTOMOBILE "I-IE'A;Dra'efrrrs..A

Application nied'ruiy 13, 1925. Yserial 43,349.

The''present'inventionY relates to impr-'ove`-` ments in ,*limrneri-il for automobile headlights, and its particular object is to provide. a dimmer that is Very simple, may bey easily applied, and is efiicient inV breaking up and distributing thelight rays inv such a manner as to prevent Vthe glare of aheadlight-'from blinding pedestrians or drivers Anti-glaring devices have, in the past, been principallyv of approaching automobiles.

incorporatedl inthe lenses Which break the rays after the same havegbeenY refiected from the usual parabolic reflector f-su'rrounding V- the source of light.V In the presentinvention it 1s proposed to provide a dimming" devicethat is -immediately associated With the reflector and breaks theglight rays Whilethe samearebeing reflectedso as to affect the-rays at their source fThe preferred form of our invention is illustrated inf the accompanying drawing,` in Which Y Figure 1 'represents a vertical section through a' headlight'using our dimmer.A

may be made Within the scope of the claimsA heretov attached With-out departing from the spirit of the invention. .Y

` In Figurel is shown the customary headlight arrangement including` a light housing 1, a 'reflector 2,1ens3-bearing upon a i' flange 4 of the reflector and a rim 6 pressing Y the lens and the flange -l of thefreflector the usualcylindricalxbase 12 of the light,

rim may be held in place bythefvlens.

, In operation the ,lightv rays emanating y rather than ivhile vpassing through the lens.l

forwardly in straight 'lines by thefactive lwhereby the Figure 2 a Vertical section through the'f againstthe` edge'of the' light housing, vvith 4o a globej 7 Vmounted preferably at the focal "point 'ofthe reflector. i

Our dimmer18jis'-made ofthe same form f -as the reector so that 'it vmay be placed` i against theL active facefthereof as shown in Figure 1, and consists of' ai rather thin sheet .ofmetal perforated asshovvn at'9 throughj out its area,rtheperforations beingcomparatively Vsmall. and being preferably ,evenly distributed throughout thel area ofthe dim-` 5o irnerf` The latter maybe held againstthej reflector by any suitable'rneanS, the same `being preferably formed withjan axial perforation 11 allowingit .to-.be slipped over While the from the source 7 instead of being reflected" face ofthe reflector, are broken u and reflected -in numerous, various irections nated.

'The dimmerfis preferablymade yofr'brass 165;'

or copperQ, y Y We claim:

1 The combination ofi 'a reflector and a :I .perforatedtdimmer contacting the acti-ve-V face of the reflectory for breaking upl light70 rays striking the same.

2. Thercombination of a( reflector and a Y Y perforateddimin'e'r contacting the active face of the reflector for breaking 'up'light EDWARD J". SMYTHE. Y .ALEXANDER Kilian.,V

glare is substantially elimi- Y Y 

